Bermuda-based RenaissanceRe Holdings Ltd has reported that its fourth-quarter net earnings fell 42 percent after more than $50 million of additional losses from the New Zealand earthquake that struck in September.The company reported net income of $122.6 million for the quarter, compared to $211.8 million in the same period of 2009.Operating earnings per share of $3.47 beat analysts’ expectations of $2.04, as the company said the negative impact of the Chile earthquake in February had been $22.6 million less than expected, while the net claims position on European windstorm Xynthia also improved by $15.8 million, boosting results.Full-year earnings fell to $702.6 million from $838.8 million in 2009.